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Recent Evidence for Convection in Sunspot Penumbrae
Stockholm University, Faculty of Science, Department of Astronomy. (Institute for Solar Physics)
2009 (English)In: Space Science Reviews, ISSN 0038-6308, E-ISSN 1572-9672, Vol. 144, 229-247 p.Article, review/survey (Refereed) Published
Abstract [en]

Whereas penumbral models during the last 15 years have been successful in explaining Evershed flows and magnetic field inclination variations in terms of flux tubes, the lack of contact between these models and a convective process needed to explain the penumbral radiative heat flux has been disturbing. We report on recent observational and theoretical evidence that challenge flux tube interpretations and conclude that the origin of penumbral filamentary structure is overturning convection.

Place, publisher, year, edition, pages
2009. Vol. 144, 229-247 p.
Keyword [en]
Sunspots, Magnetic field
URN: urn:nbn:se:su:diva-35879OAI: diva2:288434
Available from: 2010-01-21 Created: 2010-01-20 Last updated: 2011-02-15Bibliographically approved

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